Eldritch Weapon

Through your training, you have learned to combine the raw power of the Weave with your martial prowess to produce a devastating attack. 

As an action, you can can make an attack with a melee weapon and deal an extra 1d10 of force damage in addition to the regular damage of the weapon.

At higher levels:

When you cast this spell using a 2nd level spell slot or higher,   you get 1 additional attack with your melee weapon to a maximum of 3 additional attacks.